takaaki mastuzawa / pwm_all_out

MATSU-bed(LPC1549)でPWMを4つ以上出すプログラム

Dependents:   servo_controller_1549

PwmOut_all.h@4:49ee58dc8e4d, 2018-02-17 (annotated)

Committer:
hardtail
Date:
Sat Feb 17 07:23:48 2018 +0000
Revision:
4:49ee58dc8e4d
Parent:
0:64b18a3829f1 
??????????

Who changed what in which revision?

UserRevisionLine numberNew contents of line
hardtail 0:64b18a3829f1 1 /* mbed Microcontroller Library
hardtail 0:64b18a3829f1 2 * Copyright (c) 2006-2013 ARM Limited
hardtail 0:64b18a3829f1 3 *
hardtail 0:64b18a3829f1 4 * Licensed under the Apache License, Version 2.0 (the "License");
hardtail 0:64b18a3829f1 5 * you may not use this file except in compliance with the License.
hardtail 0:64b18a3829f1 6 * You may obtain a copy of the License at
hardtail 0:64b18a3829f1 7 *
hardtail 0:64b18a3829f1 8 * http://www.apache.org/licenses/LICENSE-2.0
hardtail 0:64b18a3829f1 9 *
hardtail 0:64b18a3829f1 10 * Unless required by applicable law or agreed to in writing, software
hardtail 0:64b18a3829f1 11 * distributed under the License is distributed on an "AS IS" BASIS,
hardtail 0:64b18a3829f1 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
hardtail 0:64b18a3829f1 13 * See the License for the specific language governing permissions and
hardtail 0:64b18a3829f1 14 * limitations under the License.
hardtail 0:64b18a3829f1 15 */
hardtail 0:64b18a3829f1 16 #ifndef MBED_PWMOUT_ALL_H
hardtail 0:64b18a3829f1 17 #define MBED_PWMOUT_ALL_H
hardtail 0:64b18a3829f1 18
hardtail 0:64b18a3829f1 19 #include "platform.h"
hardtail 0:64b18a3829f1 20
hardtail 0:64b18a3829f1 21 #if DEVICE_PWMOUT
hardtail 0:64b18a3829f1 22 #include "pwm_all_api.h"
hardtail 0:64b18a3829f1 23
hardtail 0:64b18a3829f1 24 //namespace mbed {
hardtail 0:64b18a3829f1 25
hardtail 0:64b18a3829f1 26 /** A pulse-width modulation digital output
hardtail 0:64b18a3829f1 27 *
hardtail 0:64b18a3829f1 28 * Example
hardtail 0:64b18a3829f1 29 * @code
hardtail 0:64b18a3829f1 30 * // Fade a led on.
hardtail 0:64b18a3829f1 31 * #include "mbed.h"
hardtail 0:64b18a3829f1 32 *
hardtail 0:64b18a3829f1 33 * PwmOut led(LED1);
hardtail 0:64b18a3829f1 34 *
hardtail 0:64b18a3829f1 35 * int main() {
hardtail 0:64b18a3829f1 36 * while(1) {
hardtail 0:64b18a3829f1 37 * led = led + 0.01;
hardtail 0:64b18a3829f1 38 * wait(0.2);
hardtail 0:64b18a3829f1 39 * if(led == 1.0) {
hardtail 0:64b18a3829f1 40 * led = 0;
hardtail 0:64b18a3829f1 41 * }
hardtail 0:64b18a3829f1 42 * }
hardtail 0:64b18a3829f1 43 * }
hardtail 0:64b18a3829f1 44 * @endcode
hardtail 0:64b18a3829f1 45 *
hardtail 0:64b18a3829f1 46 * @note
hardtail 0:64b18a3829f1 47 * On the LPC1768 and LPC2368, the PWMs all share the same
hardtail 0:64b18a3829f1 48 * period - if you change the period for one, you change it for all.
hardtail 0:64b18a3829f1 49 * Although routines that change the period maintain the duty cycle
hardtail 0:64b18a3829f1 50 * for its PWM, all other PWMs will require their duty cycle to be
hardtail 0:64b18a3829f1 51 * refreshed.
hardtail 0:64b18a3829f1 52 */
hardtail 0:64b18a3829f1 53 class PwmOutAll {
hardtail 0:64b18a3829f1 54
hardtail 0:64b18a3829f1 55 public:
hardtail 0:64b18a3829f1 56
hardtail 0:64b18a3829f1 57 /** Create a PwmOut connected to the specified pin
hardtail 0:64b18a3829f1 58 *
hardtail 0:64b18a3829f1 59 * @param pin PwmOut pin to connect to
hardtail 0:64b18a3829f1 60 */
hardtail 0:64b18a3829f1 61 PwmOutAll(PinName pin) {
hardtail 4:49ee58dc8e4d 62 pwmout_all_init(&_pwm, pin);
hardtail 0:64b18a3829f1 63 }
hardtail 0:64b18a3829f1 64
hardtail 0:64b18a3829f1 65 /** Set the ouput duty-cycle, specified as a percentage (float)
hardtail 0:64b18a3829f1 66 *
hardtail 0:64b18a3829f1 67 * @param value A floating-point value representing the output duty-cycle,
hardtail 0:64b18a3829f1 68 * specified as a percentage. The value should lie between
hardtail 0:64b18a3829f1 69 * 0.0f (representing on 0%) and 1.0f (representing on 100%).
hardtail 0:64b18a3829f1 70 * Values outside this range will be saturated to 0.0f or 1.0f.
hardtail 0:64b18a3829f1 71 */
hardtail 0:64b18a3829f1 72 void write(float value) {
hardtail 4:49ee58dc8e4d 73 pwmout_all_write(&_pwm, value);
hardtail 0:64b18a3829f1 74 }
hardtail 0:64b18a3829f1 75
hardtail 0:64b18a3829f1 76 /** Return the current output duty-cycle setting, measured as a percentage (float)
hardtail 0:64b18a3829f1 77 *
hardtail 0:64b18a3829f1 78 * @returns
hardtail 0:64b18a3829f1 79 * A floating-point value representing the current duty-cycle being output on the pin,
hardtail 0:64b18a3829f1 80 * measured as a percentage. The returned value will lie between
hardtail 0:64b18a3829f1 81 * 0.0f (representing on 0%) and 1.0f (representing on 100%).
hardtail 0:64b18a3829f1 82 *
hardtail 0:64b18a3829f1 83 * @note
hardtail 0:64b18a3829f1 84 * This value may not match exactly the value set by a previous <write>.
hardtail 0:64b18a3829f1 85 */
hardtail 0:64b18a3829f1 86 float read() {
hardtail 4:49ee58dc8e4d 87 return pwmout_all_read(&_pwm);
hardtail 0:64b18a3829f1 88 }
hardtail 0:64b18a3829f1 89
hardtail 0:64b18a3829f1 90 /** Set the PWM period, specified in seconds (float), keeping the duty cycle the same.
hardtail 0:64b18a3829f1 91 *
hardtail 0:64b18a3829f1 92 * @note
hardtail 0:64b18a3829f1 93 * The resolution is currently in microseconds; periods smaller than this
hardtail 0:64b18a3829f1 94 * will be set to zero.
hardtail 0:64b18a3829f1 95 */
hardtail 0:64b18a3829f1 96 void period(float seconds) {
hardtail 4:49ee58dc8e4d 97 pwmout_all_period(&_pwm, seconds);
hardtail 0:64b18a3829f1 98 }
hardtail 0:64b18a3829f1 99
hardtail 0:64b18a3829f1 100 /** Set the PWM period, specified in milli-seconds (int), keeping the duty cycle the same.
hardtail 0:64b18a3829f1 101 */
hardtail 0:64b18a3829f1 102 void period_ms(int ms) {
hardtail 4:49ee58dc8e4d 103 pwmout_all_period_ms(&_pwm, ms);
hardtail 0:64b18a3829f1 104 }
hardtail 0:64b18a3829f1 105
hardtail 0:64b18a3829f1 106 /** Set the PWM period, specified in micro-seconds (int), keeping the duty cycle the same.
hardtail 0:64b18a3829f1 107 */
hardtail 0:64b18a3829f1 108 void period_us(int us) {
hardtail 4:49ee58dc8e4d 109 pwmout_all_period_us(&_pwm, us);
hardtail 0:64b18a3829f1 110 }
hardtail 0:64b18a3829f1 111
hardtail 0:64b18a3829f1 112 /** Set the PWM pulsewidth, specified in seconds (float), keeping the period the same.
hardtail 0:64b18a3829f1 113 */
hardtail 0:64b18a3829f1 114 void pulsewidth(float seconds) {
hardtail 4:49ee58dc8e4d 115 pwmout_all_pulsewidth(&_pwm, seconds);
hardtail 0:64b18a3829f1 116 }
hardtail 0:64b18a3829f1 117
hardtail 0:64b18a3829f1 118 /** Set the PWM pulsewidth, specified in milli-seconds (int), keeping the period the same.
hardtail 0:64b18a3829f1 119 */
hardtail 0:64b18a3829f1 120 void pulsewidth_ms(int ms) {
hardtail 4:49ee58dc8e4d 121 pwmout_all_pulsewidth_ms(&_pwm, ms);
hardtail 0:64b18a3829f1 122 }
hardtail 0:64b18a3829f1 123
hardtail 0:64b18a3829f1 124 /** Set the PWM pulsewidth, specified in micro-seconds (int), keeping the period the same.
hardtail 0:64b18a3829f1 125 */
hardtail 0:64b18a3829f1 126 void pulsewidth_us(int us) {
hardtail 4:49ee58dc8e4d 127 pwmout_all_pulsewidth_us(&_pwm, us);
hardtail 0:64b18a3829f1 128 }
hardtail 0:64b18a3829f1 129
hardtail 0:64b18a3829f1 130 #ifdef MBED_OPERATORS
hardtail 0:64b18a3829f1 131
hardtail 0:64b18a3829f1 132 /** A operator shorthand for write()
hardtail 0:64b18a3829f1 133 */
hardtail 0:64b18a3829f1 134 PwmOutAll& operator= (float value) {
hardtail 0:64b18a3829f1 135 write(value);
hardtail 0:64b18a3829f1 136 return *this;
hardtail 0:64b18a3829f1 137 }
hardtail 0:64b18a3829f1 138
hardtail 0:64b18a3829f1 139 PwmOutAll& operator= (PwmOutAll& rhs) {
hardtail 0:64b18a3829f1 140 write(rhs.read());
hardtail 0:64b18a3829f1 141 return *this;
hardtail 0:64b18a3829f1 142 }
hardtail 0:64b18a3829f1 143
hardtail 0:64b18a3829f1 144 /** An operator shorthand for read()
hardtail 0:64b18a3829f1 145 */
hardtail 0:64b18a3829f1 146 operator float() {
hardtail 0:64b18a3829f1 147 return read();
hardtail 0:64b18a3829f1 148 }
hardtail 0:64b18a3829f1 149 #endif
hardtail 0:64b18a3829f1 150
hardtail 0:64b18a3829f1 151 protected:
hardtail 4:49ee58dc8e4d 152 pwmout_all_t _pwm;
hardtail 0:64b18a3829f1 153 };
hardtail 0:64b18a3829f1 154
hardtail 0:64b18a3829f1 155 //} // namespace mbed
hardtail 0:64b18a3829f1 156
hardtail 0:64b18a3829f1 157 #endif
hardtail 0:64b18a3829f1 158
hardtail 0:64b18a3829f1 159 #endif